indeed, this north korean 'seismic event' is different than other 'normal' seismic events, with exponential dampening. but is it still a proof of h-bomb? maybe

indeed, this north korean 'seismic event' is different than other 'normal' seismic events, with exponential dampening. but is it still a proof of h-bomb? maybe just ordinary (if you could call it so) nuclear bomb test?